I've stacked watch shots taken indoors. I don't seem to have any luck outside. The spider above has moved its web over one of my windows. I thought I'd be able to catch it from inside the house through the glass but there was enough of a breeze to keep the web fluttering so focus was impossible.
I've never used Rodinal. When I started doing my own b&w I went with Cinestill's monobath. I switched back to D-76 when the monobath failed on the 4 x 5 sheets of Fomapan 100.
I suspect the Brightin Star is a gimmick lens. I'm bummed that my film got trashed, I really wanted to see it against the Zeiss Biogon and the 14mm Panasonic.
These Steiner builds are somewhat common here in Oregon with something like 100 + cabins built by them and two churches. They all exhibit similar build characteristics.